1 Unit of Rheumatology, University of Pavia, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo Foundation, Pavia, Italy.
2 Full Professor of Rheumatology, Unit of Rheumatology, University of Pavia, IRCCS Policlinico San Matteo Foundation, Pavia, Italy. montecucco@smatteo.pv.it.